I am working on a project where I need to upload image to my server. I want to store my image's binary data to BLOB data type field in database. Therefore I need to convert my image into binary format. So that it can be saved on servers database.
So How to convert an image into binary format? Please advise.
You can use the CoreGraphics' method UIImagePNGRepresentation(UIImage *image), which returns NSData and save it.
and if you want to convert it into again UIImage create it using [UIimage imageWithData:(NSData *data)] method.
Demo to send your UIImage to Server
- (void)sendImageToServer {
UIImage *yourImage= [UIImage imageNamed:@"image.png"];
NSData *imageData = UIImagePNGRepresentation(yourImage);
NSString *postLength = [NSString stringWithFormat:@"%d", [imageData length]];
// Init the URLRequest
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setHTTPMethod:@"POST"];
[request setURL:[NSURL URLWithString:[NSString stringWithString:@"http://yoururl.domain"]]];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:imageData];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if (connection) {
}
[request release];
}
Use:
NSData *data = UIImageJPEGRepresentation(image, 1.0);
//OR
NSData *data = UIImagePNGRepresentation(image);
According to requirement.
binary format?